Certain settings and customizations in MS Word won’t migrate from any version to Word 2010, because of with the way Word is designed and how data is stored in “HKEY_CURRENT_USER\software\Microsoft\Office\<OfficeVersion>\Word\Data".

Many Office settings (across all Office apps) won’t migrate when going from 32-bit Office to 64-bit Office. This is due to the way that the settings are stored in 64-bit Office installations.

If you’ve launched Office on the destination PC as a user before doing the migration of that user’s profile, most of your settings won’t migrate. This happens because Office relies on some code that only runs the first time that an Office app is launched to migrate settings.

This update isn’t a magic bullet. You may still need to do some customization to make USMT fit your particular configuration.

The update also fixes a couple of issues around hard-link migration performance when copying a folder with a huge number of files and an issue that affected certain time zones.